Create API or Add Test Asset on the open COBOL?

Both actions want a Hub URL and a CICS or IBM i connector. When do I add a test asset, and when do I create an API?

Add Test Asset registers the program and copybooks so you can send JSON and read the response in the IDE. Create API registers the same program as a Hub API asset for generation and further testing. Both need the Hub URL, an API key, and the connector. Testing in the IDE is not the same as publishing an API for other callers.